Public Cloud vs Private Cloud vs Hybrid Cloud-Cloud Deployment Model In Cloud Computing |Simplilearn

Introduction

This tutorial will help you understand the differences between public, private, and hybrid cloud deployment models in cloud computing. By exploring key factors such as use cases, definitions, and expenses, you'll gain clarity on which cloud model best suits your organization's needs.

Step 1: Understand the Use Cases

• Public Cloud: Best for small to medium-sized businesses that need cost-effective solutions for non-sensitive data.
• Private Cloud: Ideal for organizations with strict data privacy and security requirements, such as financial institutions.
• Hybrid Cloud: Suitable for businesses that require flexibility, allowing them to keep sensitive data in a private cloud while utilizing public cloud resources for less critical operations.

Step 2: Define Each Cloud Model

• Public Cloud: Services are delivered over the internet and shared among multiple customers, enabling scalability and efficiency.
• Private Cloud: Exclusive to a single organization, providing greater control over resources and enhanced security.
• Hybrid Cloud: Combines both public and private clouds, allowing data and applications to be shared between them for optimal performance.

Step 3: Explore Tenancy Models

• Public Cloud: Multi-tenant architecture, where resources are shared among various users.
• Private Cloud: Single-tenant architecture, ensuring dedicated resources for one organization.
• Hybrid Cloud: Can support both multi-tenant and single-tenant architectures depending on the configuration.

Step 4: Assess Exposure to Public

• Public Cloud: Fully exposed to the internet, which can raise security concerns.
• Private Cloud: Not exposed to the public internet, providing enhanced security.
• Hybrid Cloud: Offers a balance, with some services exposed publicly and others securely housed in a private environment.

Step 5: Determine Data Center Locations

• Public Cloud: Data centers are often geographically dispersed to enhance redundancy and availability.
• Private Cloud: Typically hosted on-premises or in a dedicated facility, giving organizations control over the location.
• Hybrid Cloud: Combines both hosting environments, allowing data to reside where it makes the most sense.

Step 6: Identify Cloud Service Providers

• Public Cloud: Major providers include Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform (GCP).
• Private Cloud: Can be built using the same providers but hosted on dedicated infrastructure.
• Hybrid Cloud: Utilizes services from multiple providers, allowing flexibility in choosing solutions.

Step 7: Analyze Hardware Components

• Public Cloud: Utilizes shared hardware resources, which reduces costs.
• Private Cloud: Requires investment in dedicated hardware and infrastructure.
• Hybrid Cloud: Combines both shared and dedicated hardware, optimizing costs and performance.

Step 8: Evaluate Expenses

• Public Cloud: Generally lower initial costs but can become expensive based on usage.
• Private Cloud: Higher upfront costs due to hardware and maintenance but provides stable costs over time.
• Hybrid Cloud: Can balance costs by leveraging both public and private resources.

Step 9: Look at Companies Using Each Model

• Public Cloud: Common among startups and tech companies needing rapid scaling.
• Private Cloud: Used by organizations with stringent compliance and security requirements, like healthcare.
• Hybrid Cloud: Adopted by many large enterprises seeking flexibility and control over their data.

Conclusion

Understanding the distinctions between public, private, and hybrid cloud models is essential for making informed decisions about cloud deployment. Evaluate your organization's specific needs regarding data sensitivity, scalability, and budget to choose the most appropriate cloud solution. Explore further educational resources or certifications to deepen your expertise in cloud computing.